In waterproofing mountain tunnels, the tunnel joint is weak link. To explore waterproof failure mechanism of waterstop belt and to propose an optimization method for belt, this paper combines tests numerical simulations, summarizes establishes a finite element model considering bonding extrusion, studies ability mechanical properties waterstop. The main conclusions are as follows: (1) capacity ...

Organismal traits may experience conflicting selection pressures if they fulfil different functions simultaneously. This can require trade-offs between or alternatively functional separation elements of the trait. An important multifunctional trait in insects is cuticular hydrocarbon (CHC) layer. CHCs cover body nearly all insects, protect against desiccation and serve as a communication signal...